From owner-freebsd-current@FreeBSD.ORG Mon Aug 18 18:01:30 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id E7302A4A for ; Mon, 18 Aug 2014 18:01:30 +0000 (UTC) Received: from dmz-mailsec-scanner-1.mit.edu (dmz-mailsec-scanner-1.mit.edu [18.9.25.12]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 863F03257 for ; Mon, 18 Aug 2014 18:01:30 +0000 (UTC) X-AuditID: 1209190c-f79ef6d000005dd6-3e-53f23e4570c3 Received: from mailhub-auth-3.mit.edu ( [18.9.21.43]) (using TLS with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by dmz-mailsec-scanner-1.mit.edu (Symantec Messaging Gateway) with SMTP id 00.F6.24022.54E32F35; Mon, 18 Aug 2014 13:56:21 -0400 (EDT) Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by mailhub-auth-3.mit.edu (8.13.8/8.9.2) with ESMTP id s7IHuJFT003508; Mon, 18 Aug 2014 13:56:20 -0400 Received: from multics.mit.edu (system-low-sipb.mit.edu [18.187.2.37]) (authenticated bits=56) (User authenticated as kaduk@ATHENA.MIT.EDU) by outgoing.mit.edu (8.13.8/8.12.4) with ESMTP id s7IHuHOs003135 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 18 Aug 2014 13:56:19 -0400 Received: (from kaduk@localhost) by multics.mit.edu (8.12.9.20060308) id s7IHuHcF016451; Mon, 18 Aug 2014 13:56:17 -0400 (EDT) Date: Mon, 18 Aug 2014 13:56:17 -0400 (EDT) From: Benjamin Kaduk To: Larry Rosenman Subject: Re: DEADLKRES crash In-Reply-To: <20140818152138.GA3481@borg.lerctr.org> Message-ID: References: <20140818152138.GA3481@borg.lerctr.org> User-Agent: Alpine 1.10 (GSO 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrBIsWRmVeSWpSXmKPExsUixCmqretq9ynY4N99Xos5bz4wWSx/MIvV gcljxqf5LB77925lCWCK4rJJSc3JLEst0rdL4MqY++snU8ETtopdXbeYGhj3s3YxcnJICJhI LNx4hQXCFpO4cG89WxcjF4eQwGwmiQ0vzrBDOBsZJebvnASVOcQkce1/O5TTwCjxorcBaBYH B4uAtsTGXakgo9gEVCRmvtnIBmKLCChLrJn6hxnEZhaQl/h/5TITiC0sICPRsmAzO0grJ9AZ h1/XgoR5BRwlPj94yQhiCwkYS7ye1Q52naiAjsTq/VNYIGoEJU7OfMICMVJLYvn0bSwTGAVn IUnNQpJawMi0ilE2JbdKNzcxM6c4NVm3ODkxLy+1SNdQLzezRC81pXQTIzhQJXl2ML45qHSI UYCDUYmH98THj8FCrIllxZW5hxglOZiURHmn2XwKFuJLyk+pzEgszogvKs1JLT7EKMHBrCTC m2AKlONNSaysSi3Kh0lJc7AoifO+tbYKFhJITyxJzU5NLUgtgsnKcHAoSfD+BBkqWJSanlqR lplTgpBm4uAEGc4DNHwZSA1vcUFibnFmOkT+FKMuR0vT214mIZa8/LxUKXFeA1ugIgGQoozS PLg5sATzilEc6C1h3k8go3iAyQlu0iugJUxAS7Yu/giypCQRISXVwLj0ooPQ/s+TJoZGbXDb uu/oogUXGd+GluU7bJcNXZGx6IRNef8tz9S0CXeXit5YW8n+W2fCpf6FptPqjMy0OljWanBY Tdjkm1VXPkc8tnCto4nD20md0htOC7Mc1REKYrvH3q93mTv9av/75XcZ7htV8S0RvaovvLv+ GEe6spB/X33rQimez0osxRmJhlrMRcWJAB1c60kLAwAA Cc: freebsd-current@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Aug 2014 18:01:31 -0000 On Mon, 18 Aug 2014, Larry Rosenman wrote: > I got the following: > > borg.lerctr.org dumped core - see /var/crash/vmcore.8 > > Mon Aug 18 07:30:42 CDT 2014 > > FreeBSD borg.lerctr.org 11.0-CURRENT FreeBSD 11.0-CURRENT #63 r269784M: Sun Aug 10 12:33:07 CDT 2014 root@borg.lerctr.org:/usr/obj/usr/src/sys/VT-LER amd64 > > panic: deadlkres: possible deadlock detected for 0xfffff8002abeb000, > blocked for 1800926 ticks [...] > Current language: auto; currently minimal > (kgdb) > > What info do folks need? Most useful would be the "show alllocks" from DDB. Getting the lock information from kgdb is rather more annoying, though jhb has some gdb scripts which help. (http://people.freebsd.org/~jhb/gdb/) I guess the 'allchains' command from gdb6 is the one in question, but it's been a while since I tried to use these scripts. -Ben